| Relationships | Role | Relationship Start | Relationship End |
| Broad Street Control Advisors, L.L.C. | Parent | 6/19/2015 | |
| Goldman, Sachs & Co. | Parent | 6/19/2015 | 8/21/2015 |
| Broad Street Principal Investments, L.L.C. | Parent | 6/19/2015 | 8/21/2015 |
| Sterling Ultimate Parent Corp. | Subsidary | 6/19/2015 | |
| Sterling Ultimate Topco Lp | Subsidary | 1/27/2016 |